Plunger pump



Patented Feb. 8,

.UNITED sT LUNGER PUMP.

. Application led'August14,'1926, Serial No. 1291253, and in Germany August' 12, 1925.

. Heretofore, plunger pumps have become known, in the pump body of which a detachy able cylinder with suction and pressure valves therein is arranged Which tightly sep- .5 arates the suction and pressure chambers.

According to the present invention, said cylinder is rmly held upon the. bottom of the pump body'by the pressure of the stuffing-box packing.` l

The pump body av contains the suction and pressure chambers Z and m respectively-With the suction. and `pressure conduits n and o thereon. Tho pump body acarrie's a detachable vcentrally arranged cylinder b tightly l5 separating said suction and pressure chambers by means of a packing ring i and carrying the suction and pressure valves While a hood c on the pump body serves as an upper plunger guide and as a guide for the 20 pressure valves and contains a gland-ring d and the packing 'c of a stuiing-box.`

j A screw g, or aplurality of said screws,

in the hood c act uponv the gland-ring d and serve to-ti'ghten the packing e and'thus the 25l plunger h in the 'cylinder b, and to press the latter, Which projects with its upper end into the hood directly beneath' said packing,

.rmly upon the bottom ot' the pump body.

A lower extension on the cylinder b beneath the suction valve s receives slots m fora passage of the pressure-liquid therethrough and'is centrally held on the bottom4 of the pump body by means of an annular projection 'c Vof the latter.

What I claim, is

The combinatiom ina plunger pumpaof Vserving asan upper plunger and cylinder guide andas a guide for said pressure valves, a gland-ring and a packing-of a stuffing-box insaid hood, the upper end of said cylinder projecting into said hood directly beneathtighten said packing and to press said cyl- 4f "sa-id packing, and means on said hood to inder firmly upon the bottom of saidpump body Within the annular projection thereon. In testimony whereof I have hereunto set m hand.

y' HERMANN BOCKHQLT. 

